Question

R1={(1,2),(1,4)}

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Answer 1

Resposta:

R1= {(1, 1); (1, 2); (2, 1); (2, 4); (3, 3); (4, 4); (4, 2)}.

R2= {(1, 1); (1, 2); (2, 4); (3, 3); (4, 4); (3, 2)}.

R3= {(1, 2); (2, 1); (3, 3); (4,1); (3, 2)}.

R4= {(1, 4); (1, 2); (2, 2); (2, 4); (3, 4)}.

R5= {(1, 2); (1, 4); (2,1); (2, 4); (4, 1); (4, 2)}.